kutaki | f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc

Analysis

max time kernel
150s
max time network
21s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
24/07/2022, 15:07

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General

Target

f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe
Size

499KB
MD5

3d286767965d3960576a64e772175d6c
SHA1

b2fdeb9a1af6ea401c8388b1198a729caf01b4ce
SHA256

f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc
SHA512

217dd95656d7c0e76cda0e25f82857f16e2224b7d13e1fb050083a169450e403699ef65464b7de841820972b1c04a0055780c95e46932d9d24134e997b115ed8

Score

10^/10

kutaki keylogger stealer

Malware Config

Signatures

Kutaki
Information stealer and keylogger that hides inside legitimate Visual Basic applications.
stealer keylogger kutaki

Kutaki Executable 2 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022f00-134.dat	family_kutaki
behavioral2/files/0x0009000000022f00-135.dat	family_kutaki

Executes dropped EXE 1 IoCs

pid	Process
548	lunlerio.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	lunlerio.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	lunlerio.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe
4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe
4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe
548	lunlerio.exe
548	lunlerio.exe
548	lunlerio.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4932 wrote to memory of 4400	4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe	75
PID 4932 wrote to memory of 4400	4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe	75
PID 4932 wrote to memory of 4400	4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe	75
PID 4932 wrote to memory of 548	4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe	77
PID 4932 wrote to memory of 548	4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe	77
PID 4932 wrote to memory of 548	4932	f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe	77

C:\Users\Admin\AppData\Local\Temp\f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe
"C:\Users\Admin\AppData\Local\Temp\f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc.exe"
1⤵
- Drops startup file
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c C:\Users\Admin\AppData\Local\Temp\
  2⤵
  PID:4400
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe"
  2⤵
  - Executes dropped EXE
  - Maps connected drives based on registry
  - Suspicious use of SetWindowsHookEx
  PID:548

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe

Filesize
499KB

MD5
3d286767965d3960576a64e772175d6c

SHA1
b2fdeb9a1af6ea401c8388b1198a729caf01b4ce

SHA256
f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc

SHA512
217dd95656d7c0e76cda0e25f82857f16e2224b7d13e1fb050083a169450e403699ef65464b7de841820972b1c04a0055780c95e46932d9d24134e997b115ed8

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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\lunlerio.exe

Filesize
499KB

MD5
3d286767965d3960576a64e772175d6c

SHA1
b2fdeb9a1af6ea401c8388b1198a729caf01b4ce

SHA256
f0719030fe6c57b80d5aa3716e8a878de08112f116e230afc10bfca73a29f2bc

SHA512
217dd95656d7c0e76cda0e25f82857f16e2224b7d13e1fb050083a169450e403699ef65464b7de841820972b1c04a0055780c95e46932d9d24134e997b115ed8

Download Submit